Baseline LDL-C and Lp(a) elevations portend a high risk of coronary revascularization in patients after stent...

Area of Science:

• Cardiology
• Interventional Cardiology
• Lipidology

Background:

• Coronary restenosis after stent placement presents a significant clinical challenge.
• Lipoprotein(a) (Lp(a)) is implicated in cardiovascular disease, but its role in restenosis post-stenting requires further clarification.
• The interplay between Lp(a) and low-density lipoprotein cholesterol (LDL-C) in restenosis is not fully understood.

Purpose of the Study:

• To investigate the predictive value of elevated Lp(a) for coronary restenosis following stent placement.
• To determine if the impact of Lp(a) on coronary restenosis is modulated by baseline LDL-C levels.

Main Methods:

• A cohort of 832 patients undergoing stent placement was enrolled and followed for clinical outcomes.
• Participants were stratified based on Lp(a) levels (<30 mg/dL vs. ≥30 mg/dL) and LDL-C levels (<1.8 mmol/L vs. ≥1.8 mmol/L).
• Clinical endpoints, including major adverse cardiovascular events (MACE) and coronary revascularization (CR), were compared across groups.

Main Results:

• Patients with high Lp(a) levels more frequently presented with acute coronary syndrome and multi-vessel disease.
• In patients with LDL-C < 1.8 mmol/L, no significant difference in cardiovascular outcomes was observed between Lp(a) groups.
• However, in patients with LDL-C ≥ 1.8 mmol/L, high Lp(a) was associated with significantly higher incidences of MACE and CR (OR for CR = 2.05).

Conclusions:

• Elevated Lp(a) is a significant predictor of increased coronary revascularization after stent placement.
• The risk of coronary restenosis associated with elevated Lp(a) is particularly pronounced in patients with elevated baseline LDL-C levels.